JPS634345U - - Google Patents
Info
- Publication number
- JPS634345U JPS634345U JP9770086U JP9770086U JPS634345U JP S634345 U JPS634345 U JP S634345U JP 9770086 U JP9770086 U JP 9770086U JP 9770086 U JP9770086 U JP 9770086U JP S634345 U JPS634345 U JP S634345U
- Authority
- JP
- Japan
- Prior art keywords
- lock pin
- eccentric bearing
- connecting rod
- guide groove
- compression ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図は本考案の第１実施例に係る可変圧縮比
機構の偏心ベアリング近傍の断面図、第２図は第
１図における偏心ベアリングの側面図、第３図は
第１図の分解斜視図、第４図は本考案の第２実施
例に係る可変圧縮比機構の偏心ベアリング近傍の
断面図、第５図は第４図における偏心ベアリング
の側面図、第６図は従来の可変圧縮比機構の断面
図、第７図は第６図の―線に沿う断面図、第
８図は第６図の部分拡大断面図、第９図は第８図
における偏心ベアリングの側面図、である。
２０……コネクテイングロツド、２１……ピス
トンピン、２３，４１……偏心ベアリング、２４
，４２……厚肉部、２５，４３……薄肉部、２７
……ロツクピン、３０……ロツクピン案内溝、３
１，４５……フローテイングブツシユ。
Fig. 1 is a sectional view of the vicinity of the eccentric bearing of the variable compression ratio mechanism according to the first embodiment of the present invention, Fig. 2 is a side view of the eccentric bearing in Fig. 1, and Fig. 3 is an exploded perspective view of Fig. 1. , FIG. 4 is a sectional view near the eccentric bearing of the variable compression ratio mechanism according to the second embodiment of the present invention, FIG. 5 is a side view of the eccentric bearing in FIG. 4, and FIG. 6 is a conventional variable compression ratio mechanism. FIG. 7 is a cross-sectional view taken along line - in FIG. 6, FIG. 8 is a partially enlarged cross-sectional view of FIG. 6, and FIG. 9 is a side view of the eccentric bearing in FIG. 8. 20... Connecting rod, 21... Piston pin, 23, 41... Eccentric bearing, 24
, 42... Thick wall part, 25, 43... Thin wall part, 27
...Lock pin, 30...Lock pin guide groove, 3
1,45...Floating bush.
Claims (1)
回転可能に介装され、外周面に前記コネクテイン
グロツド側に摺動自在に設けられたロツクピンを
ロツクピン係合孔に誘導するロツクピン案内溝を
設けた可変圧縮比機構の偏心ベアリングにおいて
、該偏心ベアリングの前記ロツクピン案内溝が設
けられる以外の部位の肉厚を前記ロツクピン案内
溝が設けられる部位の肉厚よりも薄肉に形成し、
該薄肉となる部位と前記コネクテイングロツドと
の間あるいは該薄肉となる部位と前記ピストンピ
ンとの間の少なくとも一方に、内外周にすべり面
を有するフローテイングブツシユを介装したこと
を特徴とする可変圧縮比機構の偏心ベアリング。 A variable lock pin is rotatably interposed between the piston pin and the connecting rod, and has a lock pin guide groove provided on the outer peripheral surface to guide the lock pin slidably provided on the connecting rod side to the lock pin engagement hole. In an eccentric bearing for a compression ratio mechanism, a portion of the eccentric bearing other than the portion where the lock pin guide groove is provided is thinner than a portion where the lock pin guide groove is provided,
A floating bush having sliding surfaces on the inner and outer peripheries is interposed between the thin-walled portion and the connecting rod or between the thin-walled portion and the piston pin. Eccentric bearing of variable compression ratio mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9770086U JPS634345U (en) | 1986-06-27 | 1986-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9770086U JPS634345U (en) | 1986-06-27 | 1986-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS634345U true JPS634345U (en) | 1988-01-12 |
Family
ID=30964926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9770086U Pending JPS634345U (en) | 1986-06-27 | 1986-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS634345U (en) |
-
1986
- 1986-06-27 JP JP9770086U patent/JPS634345U/ja active Pending